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https://issues.apache.org/jira/browse/SOLR-12770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16802530#comment-16802530
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ASF subversion and git services commented on SOLR-12770:
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Commit 68fa249034ba8b273955f20097700dc2fbb7a800 in lucene-solr's branch
refs/heads/branch_6_6 from Cassandra Targett
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=68fa249 ]
SOLR-12770: make docs on shards param a little more clear, fix a couple typos
> [CVE-2017-3164] Make it possible to configure a shards whitelist for
> master/slave
> ---------------------------------------------------------------------------------
>
> Key: SOLR-12770
> URL: https://issues.apache.org/jira/browse/SOLR-12770
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: search
> Affects Versions: 1.3, 1.4, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.0, 4.1, 4.2,
> 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 4.10, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 6.0,
> 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6
> Reporter: Jan Høydahl
> Assignee: Tomás Fernández Löbbe
> Priority: Major
> Labels: masterSlave
> Fix For: 7.7
>
>
> The "shards" parameter does not have a corresponding white list mechanism, so
> it can request any URL, and the content of the HTTP response will be returned.
> For legacy master/slave clusters, there is no Zookeeper to keep track of all
> the nodes and shards in the cluster. So users manage the 'shards' parameter
> manually for distributed search. This issue will add the option of
> configuring a list of what shards can be requested.
> Users will then get an explicit error response if the request includes a
> shard which is not in the preconfigured whitelist, e.g. due to a typo. I
> think all shards logic is handled by HttpShardHandler already so the logic
> should fit nicely in that one class, configured in {{solr.xml}}.
> With SolrCloud this whitelist is auto managed to match nodes in the cluster.
> It is possible to disable the whitelist feature for backward compatibility.
> Please see Reference Guide chapter [Distributed
> Requests|https://builds.apache.org/view/L/view/Lucene/job/Solr-reference-guide-7.7/javadoc/distributed-requests.html#configuring-the-shardhandlerfactory].
>
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